Dec 18 2013:
It's the Guttenberg revolution of stuff.
Good designs won't have to go through the marketing process, and will be shared instantly. This will boost design and everything in our homes is about to evolve, litterally. Better spoon, better coat hanger, better screw driver... objects will have very short lifespans and people will keep an eye out for updates.

Some people will try and sell their designs for buyers to print out, but inevitably designs will become free. Just as I'm sharing my ideas for free right now. People just enjoy sharing ideas. So objects will become free.
It won't be long before we can 3D print medecine, food, computers, etc... basically for free.
This will change the world in a way I can't really imagine.
We might also be able to print people someday, but the implications go beyond my imagination.

Dec 22 2013:
There are some breakthroughs that need to be done before it really takes off. Do not get me wrong, I still think it will be huge without the breakthroughs. It is currently using only 1 material at a time. We need to go to the 14 nanometer range with multiple materials being placed on the product at the same time. Also, need stronger materials to withstand pressure and heat.

Currently, I know of several projects using the technology in Industry to create prototype parts to see if they fit together. In these applications the current materials would not last long enough.

In the near future, I could see people creating small items like screws, nuts and bolts, etc. to use in house.

Dec 22 2013:
Is there any possibility to have a 3D printed beautiful damsel , a complete human being ? Lot of things are being printed these days using 3D printing technology so,this thought popped up in my mind.